Question

Suppose for the **same 5,000 men**, we also
measured their weight. Suppose the data were again normally
distributed. The **mean** is **160.0**
lbs., and the **standard deviation** is **20.0
lbs**. Suppose the correlation between height and weight is
** r = +.61.** Use the ‘shortcut’ formulas to
answer the questions and show your work:

What is your best guess for the height of a man who weighs 150 lbs?

Answer #1

Do this one by hand. Suppose we measured the height of 5,000 men
and found that the data were normally distributed with a mean of
70.0 inches and a standard deviation of 4.0 inches. Answer the
questions using Table A and show your work:
What proportion of men can be expected to have heights greater
than 73 inches?

Do this one by hand. Suppose we measured the height of 5,000 men
and found that the data were normally distributed with a mean of
70.0 inches and a standard deviation of 4.0 inches. Answer the
questions using Table A and show your work:
What proportion of men can be expected to have heights between
71 and 72 inches?

1. (20 pts) Do this one by
hand. Suppose we measured the height of 5,000 men
and found that the data were normally distributed with a
mean of 70.0 inches and a standard
deviation of 4.0 inches. Answer the questions using Table
A and show your work:
What proportion of men can be expected to have heights less than
66 inches? Less than 75 inches?
What proportion of men can be expected to have heights greater
than 64 inches? Greater...

Do this one by hand. Suppose we measured the height of
10,000 men and found that the data were normally
distributed with a mean of 70.0 inches and a
standard deviation of 4.0 inches. Answer the
questions and show your work:
A. What
proportion of men can be expected to have heights less
than: 66, 70, 72, 75 inches?
B. What
proportion of men can be expected to have heights greater
than: 64, 66, 73, 78 inches?
C. What
proportion...

1.Investigators studied the relationship between screen time
(measured in hours/week) and body-mass-index, BMI=wt/ht^2
(wt=weight in kg and ht=height in meters), in men age 25 -45 .
They surveyed 6234 U.S. men in this age group, the scatter diagram
for the data was homoscedastic and the BMI data was approximately
normally distributed both unconditionally and in each vertical
strip.
The investigators generated the following summary
statistics:
X=35 SDX=12
Y=27 SDY=6 r=0.8
where X=hours of screen-time per week, and Y=BMI.
(a) (2...

1. A city official claims that the proportion of all commuters
who are in favor of an expanded public transportation system is
50%. A newspaper conducts a survey to determine whether this
proportion is different from 50%. Out of 225 randomly chosen
commuters, the survey finds that 90 of them reply yes when asked if
they support an expanded public transportation system. Test the
official’s claim at α = 0.05.
2. A survey of 225 randomly chosen commuters are asked...

Please answer the following Case
analysis questions
1-How is New Balance performing compared to its primary rivals?
How will the acquisition of Reebok by Adidas impact the structure
of the athletic shoe industry? Is this likely to be favorable or
unfavorable for New Balance?
2- What issues does New Balance management need to address?
3-What recommendations would you make to New Balance Management?
What does New Balance need to do to continue to be successful?
Should management continue to invest...

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